Department of Electrical Engineering

Permanent URI for this collection

https://escholar.umt.edu.pk/handle/123456789/1175
The mission of the electrical engineering program is to prepare its graduates for successful professional engineering careers by providing electrical engineering capabilities necessary to engage in service, research and development that serve the needs of their homeland Pakistan as well as the other parts of the globe.

Browse

Browsing Department of Electrical Engineering by Author "Ahmed Malik"

Now showing 1 - 4 of 4
  • Thumbnail Image
    Item
    Active phased array radars as an effective eccm systems
    (Progress in electromagnetic research symposium, 2014) Faran Awais Butt; Ahmed Malik; Madiha Jalil
    Phased Array Radars have started to regain some serious attention over the past few decades owing to its high accuracy, efficiency and less susceptible characteristics. The most basic requirement that one could wish for in a good modern radar is its beam agility, low distribution loss, maximum bandwidth, lower cost, maximum efficiency and effective resource management. Modern phased array radars can be best utilized to achieve characteristics of an effective radar system with minimum tradeoffs. The most basic thing that it can achieve is, that the antennas can be arranged to get the desired radiation pattern. The characteristics and detection abilities of active phased array radar systems are discussed. Moreover, the paper suggests that active phased array radar can be best suited as an electronic counter-counter measure system.
  • Thumbnail Image
    Item
    Need for smart transmission grid in Pakistan
    (2013 IEEE Business Engineering and Industrial Applications Colloquium (BEIAC), 2013) Imran Ali; Faran Awais Butt; Ahmed Malik; Talha Khalid
    Pakistan, a developing country, full of natural resources and manpower with population exceeding 176.74 million has a lot of potential in fulfilling its energy requirements. However, the country is facing severe shortage of electricity due to overloading, mismanagement, transmission line losses, electricity theft issues, aged equipment, poor maintenance and questionable monitoring and control. These issues have really put the power sector to a downfall. In Pakistan, transmission line losses are very high as compared to other countries. Each year these losses are increasing which is becoming a challenge for the country. Existing aged Transmission Grids (TGs) are very poorly managed, rendering them unreliable, insufficient, and unaffordable. Intelligent energy management using advanced digital technology combined with power electronics and sensors can greatly improve transmission lines efficiency. In this paper, need for Smart Transmission Grid (STG) and possible technical and nontechnical challenges are focused; proposed solution is given to tackle with these on-going issues which are the main obstacles for its practical implementation.
  • Thumbnail Image
    Item
    Short-time energy, magnitude, zero crossing rate and autocorrelation measurement for discriminating voiced and unvoiced segments of speech signals
    (International Conference on, IEEE., 2013) Madiha Jalil; Faran Awais Butt; Ahmed Malik
    This paper presents different methods of separating voiced and unvoiced segments of a speech signals. These methods are based on short time energy calculation, short time magnitude calculation, and zero crossing rate calculation and on the basis of auto-correlation of different segments of speech signals. From theoretical studies, it has been observed that energy and magnitude for voiced segments is high, whereas ZCR rate is low for voiced signals. Auto-correlation function is used here to show that the voiced segment of speech remains periodic after applying auto-correlation function, while unvoiced signals lose their periodicity. Experimental results have been presented in this paper to verify theoretical studies.
  • Thumbnail Image
    Item
    A survey of different speech synthesis techniques
    (TAEECE, 2013) Madiha Jalil; Faran Awais Butt; Ahmed Malik
    The Objective of this paper is to present comprehensive overview of format and concatenative speech synthesis techniques. Initially, format synthesis is explored and then concatenative synthesis. Using softwares, speech synthesis is performed by both methods and then their results are compared. The pros and cons of both these methods are discussed as well.